61 percent of survivors in the first class
2x - 6y = 24
-5x + 6y = -6
----------------add
-3x = 18
x = 18/-3
x = -6
2x - 6y = 24
2(-6) - 6y = 24
-12 - 6y = 24
-6y = 24 + 12
-6y = 36
y = 36/-6
y = -6
solution is : (-6,-6)
The relation is a function
For a relation to be a function it must be one-to-one
That is for each value of x ( domain ) there must be only one unique value for y ( range)
The table of values meets this criteria and is therefore a function
The correct answer is option c. 5/12
From Pythagorean triplet,

,
we get to assume the right triangle as, base = 12 , perpendicular = 5 and hypotenuse = 13,
then, tanФ = perpendicular/base
= 5/12
thus, <span>The exact value of tan (m) = 5/12</span>